Configuring IPv6 IS-IS route control
Before you configure IPv6 IS-IS route control, complete basic IPv6 IS-IS configuration.
To configure IPv6 IS-IS route control:
Step | Command | Remarks |
---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter IS-IS view. | isis [ process-id ] [ vpn-instance vpn-instance-name ] | N/A |
3. Enter IS-IS IPv6 address family view. | address-family ipv6 [ unicast ] | N/A |
4. Specify a preference for IPv6 IS-IS routes. | preference { route-policy route-policy-name | preference } * | By default, the default setting is 15. |
5. Configure an IPv6 IS-IS summary route. | summary ipv6-prefix prefix-length [ avoid-feedback | generate_null0_route | [ level-1 | level-1-2 | level-2 ] | tag tag ] * | By default, no IPv6 IS-IS summary route is configured. |
6. Configure IPv6 IS-IS to advertise a default route. | default-route-advertise [ avoid-learning | [ level-1 | level-1-2 | level-2 ] | route-policy route-policy-name | tag tag ] * | By default, IPv6 IS-IS does not advertise Level-1 and Level-2 default routes. |
7. Configure IPv6 IS-IS to filter redistributed routes. | filter-policy { ipv6-acl-number | prefix-list prefix-list-name | route-policy route-policy-name } export [ protocol [ process-id ] ] | By default, IPv6 IS-IS does not filter redistributed routes. This command is usually used together with the import-route command. |
8. Configure IPv6 IS-IS to filter received routes. | filter-policy { ipv6-acl-number | prefix-list prefix-list-name | route-policy route-policy-name } import | By default, IPv6 IS-IS does not filter received routes. |
9. Configure IPv6 IS-IS to redistribute routes from another routing protocol. | import-route protocol [ as-number | process-id ] [ allow-ibgp ] [ allow-direct | cost cost-value | [ level-1 | level-1-2 | level-2 ] | route-policy route-policy-name | tag tag ] * | By default, IPv6 IS-IS does not redistribute routes from any other routing protocol. |
10. Configure the maximum number of redistributed Level 1/Level 2 IPv6 routes. | import-route limit number | By default, the maximum number of redistributed Level 1/Level 2 IPv6 routes is not configured. |
11. Configure route advertisement from Level-2 to Level-1. | import-route isisv6 level-2 into level-1 [ filter-policy { ipv6-acl-number | prefix-list prefix-list-name | route-policy route-policy-name } | tag tag ] * | By default, IPv6 IS-IS does not advertise routes from Level-2 to Level-1. |
12. Configure route advertisement from Level-1 to Level-2. | import-route isisv6 level-1 into level-2 [ filter-policy { ipv6-acl-number | prefix-list prefix-list-name | route-policy route-policy-name } | tag tag ] * | By default, IPv6 IS-IS advertises routes from Level-1 to Level-2. |
13. Specify the maximum number of ECMP routes for load balancing. | maximum load-balancing number | By default, the maximum number of ECMP routes equals the maximum number of ECMP routes supported by the system. |